During an assessment of the cranial nerves, the nurse finds the following: Asymmetry when the client frowns, uneven lifting of the eyebrows, sagging of the lower eyelids, and an escape of air from the right side when the client puffs their cheeks. This would indicate the dysfunction of which of the cranial nerves?
Motor component of IV (Trochlear)
Motor and sensory components of XI (Accessory)
Motor component of VII (Facial)
Motor component of X (Vagus) and sensory component of XII (Hypoglossal)
The Correct Answer is C
A) Motor component of IV (Trochlear): The trochlear nerve primarily controls the superior oblique muscle of the eye, which is responsible for downward and lateral eye movements. The findings described do not relate to eye movement and therefore do not indicate dysfunction of this nerve.
B) Motor and sensory components of XI (Accessory): The accessory nerve innervates the sternocleidomastoid and trapezius muscles, primarily affecting head rotation and shoulder elevation. The symptoms noted in the assessment do not pertain to these muscle functions, so this option is not correct.
C) Motor component of VII (Facial): The signs of asymmetry in frowning, uneven eyebrow lifting, sagging eyelids, and air escaping when puffing the cheeks are characteristic of dysfunction in the facial nerve (cranial nerve VII). This nerve controls the muscles of facial expression, and impairment would lead to the described asymmetrical movements.
D) Motor component of X (Vagus) and sensory component of XII (Hypoglossal): The vagus nerve affects autonomic functions and some swallowing muscles, while the hypoglossal nerve controls tongue movements. Neither nerve is primarily responsible for the facial expressions described in the assessment findings, making this option incorrect.
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View Related questions
Correct Answer is A
Explanation
A) VII: The facial nerve (cranial nerve VII) is responsible for controlling the muscles of facial expression. By assessing facial symmetry and movement, the nurse evaluates the integrity and function of this nerve, which is crucial for activities such as smiling, frowning, and raising eyebrows.
B) V: The trigeminal nerve (cranial nerve V) is primarily responsible for sensation in the face and motor functions such as chewing. While it plays a role in facial movement, it does not specifically assess facial expressions.
C) III: The oculomotor nerve (cranial nerve III) controls eye movement and pupil constriction. It does not directly influence facial expressions, so it is not the nerve being assessed in this context.
D) VI: The abducens nerve (cranial nerve VI) is responsible for lateral eye movement. It is unrelated to facial expression or symmetry and is not the focus of this assessment.
Correct Answer is A
Explanation
A) Subjective report: The most reliable indicator of pain is the patient's own description of their experience. Pain is inherently subjective, and individuals may perceive and express pain differently. Listening to the client's self-report provides valuable insight into their pain intensity, quality, and impact on daily life, which cannot be accurately assessed through objective measures alone.
B) Physical exam: While a physical exam can provide important information about potential sources of pain or related conditions, it may not accurately reflect the intensity or nature of the pain the patient is experiencing. Physical findings may vary widely among individuals with similar pain complaints, making this a less reliable indicator.
C) Results of a CAT scan: Imaging studies like CAT scans can identify structural issues, such as fractures or tumors, but they do not measure pain. Many patients with significant pain may have normal imaging results, while others with severe findings may report minimal discomfort, underscoring the limitations of relying solely on diagnostic tests.
D) The client's vital signs: Vital signs can indicate physiological responses to pain, such as increased heart rate or blood pressure, but they are not specific indicators of pain severity. Many factors can influence vital signs, including anxiety and other medical conditions, making them unreliable for assessing pain levels independently.